html,
body {
    height: 100%;
    margin: 0;
}

ul,
li {
    margin: 0;
    padding: 0;
}

li {
    list-style: none;
}

h1,
h2 {
    margin: 0;
}

p {
    margin: 0;
    padding: 0;
}

/* 浏览器都有自己的默认样式，以上部分为清除浏览器默认样式 */

html,
body {
    width: 100%;
    height: 100%;
}

body {
    background-image: url(https://document.youkeda.com/P3-1-HTML-CSS/1.8/login-bg.svg);
    background-size: cover;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    margin-left: -245px;
    margin-top: -201.5px;
    width: 490px;
    height: 403px;
    border-radius: 16px;
    background-color: white;



}

.logo {
    display: block;
    width: 179px;
    height: 64px;
    margin: 0 auto;
    margin-top: 62px;
}

.slogan {
    text-align: center;
    margin-top: 14px;
    font-size: 14px;
    line-height: 20px;
    letter-spacing: 7.3px;
    opacity: 0.45;
    color: #3a3a3a;
}

/* 分割线区域 */
.sep {
    margin-top: 40px;
    height: 17px;
}

.left {
    float: left;
    margin-left: 20px;
    
}

.right {
    float: right;
    margin-right: 20px;
    

    background: #EBEBEB;
}

.sep>.line {
    width: 163px;
    height: 1px;
    margin-top: 8px;
}

.sep>span {
    display: block;
    float: left;
    text-align: center;
    width: 124px;
    font-size: 12px;
    line-height: 17px;
}

.login-channel {
    margin-top: 40px;
}

.login-channel>.icon {
    display: block;
    width: 64px;
    height: 64px;
}

.login-channel>p {
    margin-top: 20px;
    width: 64px;
    text-align: center;
    font-size: 16px;
    line-height: 22px;
    color: #292929;
}

.wechat {
    float: left;
    margin-left: 116px;
}

.qq {
    float: right;
    margin-right: 116px;
}